Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (03): 62-67.doi: 10.13475/j.fzxb.20190401306

• Textile Engineering • Previous Articles     Next Articles

Grayscale simulation characteristics of jacquard fabric with cluster-dotted structure

ZHANG Aidan(), ZHOU Jiu   

  1. College of Textile Science and Engineering (International Institute of Silk), Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2019-04-03 Revised:2019-12-06 Online:2020-03-15 Published:2020-03-27

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Abstract:

In order to determine the grayscaling for black and white single-layer jacquard fabric in simulation with specific brightness tone image, a design method using the cluster-dotted method for image processing was proposed. Adopting three different brightness tone images as the simulation objects, the jacquard fabric samples were produced based on six screen frequency parameters and two float binding methods. According to the comparative analysis of the color characteristics of the original images and the figured fabrics, the results show that the high, medium and low brightness toned images are suitable for the ruling number of halftone screen that are 24, 14 and 10 lines/cm, and the local float blinding method can improve the lightness contrast of the fabric image with the cluster-dotted structure. In both mean and variance of the gray values,the cluster-dotted jacquard fabric images are closer to the original images than the shaded weave fabric images, demonstrating more stable grayscale simulation performance.

Key words: cluster-dotted, jacquard fabric, grayscale simulation, color feature, gray mean, fabric image

CLC Number: 

  • TS941.26

Fig.1

Composition form of clustered-dot halftone with different percent of black pixels"

Fig.2

Composition form of dispersed-dot halftone with different percent of black pixels"

Fig.3

Continuous tone original image and halftone images with different output resolutions. (a) Original image; (b) 300 dpi halftone dot;(c) 600 dpi halftone dot"

Fig.4

Original images. (a) High lightness;(b) Middle lightness; (c) Low lightness"

Fig.5

Jacquard fabrics using shaded weave database. (a) High lightness; (b) Middle lightness;(c) Low lightness"

Fig.6

Clustered-dot structure jacquard fabrics (overall bindings). (a) High lightness;(b) Middle lightness; (c) Low lightness"

Tab.1

First-order moment of original image and images of fabric samples"

类型 一阶矩(均值)
高明度 中明度 低明度
原图像 203.25 93.18 21.44
网点织物 150.04 102.32 84.43
影光织物 137.17 114.09 98.59

Tab.2

Second-order moment of original images and images of fabric samples"

类型 二阶矩(方差)
高明度 中明度 低明度
原图像 1.15 4.05 6.28
网点织物 1.32 1.23 0.87
影光织物 1.33 1.18 1.58

Fig.7

Clustered-dot structure jacquard fabrics with different screen frequency (part). (a) 10 line screen/cm;(b) 12 line screen/cm; (c) 14 line screen/cm; (d) 16 line screen/cm; (e) 20 line screen/cm; (f) 24 line screen/cm"

Tab.3

First-order moment of clustered-dot structure fabric samples' images with different screen frequency"

加网线数/
(线·cm-1)		 一阶矩(均值)
高明度 中明度 低明度
10 118.26 45.14 25.77
12 121.99 47.21 25.45
14 118.98 47.29 25.22
16 117.03 47.84 23.76
20 121.67 49.11 23.88
24 119.98 50.24 23.88

Tab.4

Second-order moment of clustered-dot structure fabric samples' images with different screen frequency"

加网线数/
(线·cm-1)		 二阶矩(方差)
高明度 中明度 低明度
10 1.69 4.55 4.77
12 1.25 4.47 3.83
14 1.41 4.02 4.46
16 1.56 4.67 4.55
20 2.21 5.48 3.53
24 1.24 7.08 2.95
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